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3 years ago

Why does every plant cell have a nucleus

2 answers:

7 0

Plant cells are eukaryotic cells and they all have a nucleus and DNA is stored in the nucleus and copied during replication.

Lena [83]3 years ago

3 0

Every plant cell has a nucleus because a nucleus controls the cell's main <span>activities.</span>

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Be able to describe the relationship between Freedom of Movement and phase change.

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I can explain how transferring kinetic energy in and out of a substance can cause a change

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3 years ago

Write a question about something else you would like to learn about extremophiles.

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4 years ago

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3 years ago

Give the percent yield when 162.8 g of CO2 are formed from the reaction of excess amount of C8H18 and with 218.0 grams of O2. (2

katen-ka-za [31]

Percent yield is 23.11 % when 162.8 g of CO2 are formed from the reaction of excess amount of C8H18 and with 218.0 grams of O2.

Explanation:

Balanced equation for the chemical reaction:

2C8H18 + 25O2 → 16CO2 + 18H2O

data given:

CO2 formed (actual yield) = 162.8 grams

mass of oxygen = 218 grams

16 moles of CO2 formed when 5 moles of oxygen reacted

3.6 moles of CO2 formed when 6.8 moles of oxygen reacted.

In the reaction 16 moles of CO2 will have 44.01 x 16

theoretical yield of CO2 = 704.16 grams

percent yield = $\frac{actual yield}{theoritical yield}$ x100

putting the values in the above equation

percent yield = $\frac{162.8}{704.16}$ x 100

= 0.23 x 100

= 23.11 %

Percent yield is 23.11 %.

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3 years ago

Please help me need help.

skelet666 [1.2K]

Electrons are able to "move" around the atom in set energy states in different orbitals, because the electrons "move" so fast around the nucleus where they are is just represented with an area of probability since their location and velocity cannot be measured with certainty. Protons and Neutrons are packed tightly in the nucleus held together by the strong nuclear force so they are not able to freely move.

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4 years ago